Influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the CO2 system in an Arctic fjord in Svalbard
The effect of freshwater sources on wintertime sea-ice CO2 processes was studied from the glacier front to the outer Tempelfjorden, Svalbard, in sea ice, glacier ice, brine and snow. March–April 2012 was mild, and the fjord was mainly covered with drift ice, in contrast to the observed thicker fast...
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Cambridge University Press
2020
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Online Access: | https://doi.org/10.1017/aog.2020.52 https://doaj.org/article/f550016e779f4cfebfbbf3d0b1ca6c3d |
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ftdoajarticles:oai:doaj.org/article:f550016e779f4cfebfbbf3d0b1ca6c3d 2023-05-15T13:29:37+02:00 Influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the CO2 system in an Arctic fjord in Svalbard Agneta Fransson Melissa Chierici Daiki Nomura Mats A. Granskog Svein Kristiansen Tõnu Martma Gernot Nehrke 2020-12-01T00:00:00Z https://doi.org/10.1017/aog.2020.52 https://doaj.org/article/f550016e779f4cfebfbbf3d0b1ca6c3d EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S026030552000052X/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2020.52 0260-3055 1727-5644 https://doaj.org/article/f550016e779f4cfebfbbf3d0b1ca6c3d Annals of Glaciology, Vol 61, Pp 320-340 (2020) Arctic fjords bedrock brine calcium carbonate climate change fresh water glacial meltwater ocean acidification sea-ice chemistry sea-ice formation snow Spitsbergen Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.1017/aog.2020.52 2023-03-12T01:31:55Z The effect of freshwater sources on wintertime sea-ice CO2 processes was studied from the glacier front to the outer Tempelfjorden, Svalbard, in sea ice, glacier ice, brine and snow. March–April 2012 was mild, and the fjord was mainly covered with drift ice, in contrast to the observed thicker fast ice in the colder April 2013. This resulted in different physical and chemical properties of the sea ice and under-ice water. Data from stable oxygen isotopic ratios and salinity showed that the sea ice at the glacier front in April 2012 contained on average 54% of frozen-in glacial meltwater. This was five times higher than in April 2013, where the ice was frozen seawater. In April 2012, the largest excess of sea-ice total alkalinity (AT), carbonate ion ([CO32−]) and bicarbonate ion concentrations ([HCO3−]) relative to salinity was mainly related to dissolved dolomite and calcite incorporated during freezing of mineral-enriched glacial water. In April 2013, the excess of these variables was mainly due to ikaite dissolution as a result of sea-ice processes. Dolomite dissolution increased sea-ice AT twice as much as ikaite and calcite dissolution, implying different buffering capacity and potential for ocean CO2 uptake in a changing climate. Article in Journal/Newspaper Annals of Glaciology Arctic Climate change glacier Ocean acidification Sea ice Svalbard Tempelfjord* Tempelfjorden Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Tempelfjorden ENVELOPE(17.076,17.076,78.404,78.404) Annals of Glaciology 61 83 320 340 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic fjords bedrock brine calcium carbonate climate change fresh water glacial meltwater ocean acidification sea-ice chemistry sea-ice formation snow Spitsbergen Meteorology. Climatology QC851-999 |
spellingShingle |
Arctic fjords bedrock brine calcium carbonate climate change fresh water glacial meltwater ocean acidification sea-ice chemistry sea-ice formation snow Spitsbergen Meteorology. Climatology QC851-999 Agneta Fransson Melissa Chierici Daiki Nomura Mats A. Granskog Svein Kristiansen Tõnu Martma Gernot Nehrke Influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the CO2 system in an Arctic fjord in Svalbard |
topic_facet |
Arctic fjords bedrock brine calcium carbonate climate change fresh water glacial meltwater ocean acidification sea-ice chemistry sea-ice formation snow Spitsbergen Meteorology. Climatology QC851-999 |
description |
The effect of freshwater sources on wintertime sea-ice CO2 processes was studied from the glacier front to the outer Tempelfjorden, Svalbard, in sea ice, glacier ice, brine and snow. March–April 2012 was mild, and the fjord was mainly covered with drift ice, in contrast to the observed thicker fast ice in the colder April 2013. This resulted in different physical and chemical properties of the sea ice and under-ice water. Data from stable oxygen isotopic ratios and salinity showed that the sea ice at the glacier front in April 2012 contained on average 54% of frozen-in glacial meltwater. This was five times higher than in April 2013, where the ice was frozen seawater. In April 2012, the largest excess of sea-ice total alkalinity (AT), carbonate ion ([CO32−]) and bicarbonate ion concentrations ([HCO3−]) relative to salinity was mainly related to dissolved dolomite and calcite incorporated during freezing of mineral-enriched glacial water. In April 2013, the excess of these variables was mainly due to ikaite dissolution as a result of sea-ice processes. Dolomite dissolution increased sea-ice AT twice as much as ikaite and calcite dissolution, implying different buffering capacity and potential for ocean CO2 uptake in a changing climate. |
format |
Article in Journal/Newspaper |
author |
Agneta Fransson Melissa Chierici Daiki Nomura Mats A. Granskog Svein Kristiansen Tõnu Martma Gernot Nehrke |
author_facet |
Agneta Fransson Melissa Chierici Daiki Nomura Mats A. Granskog Svein Kristiansen Tõnu Martma Gernot Nehrke |
author_sort |
Agneta Fransson |
title |
Influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the CO2 system in an Arctic fjord in Svalbard |
title_short |
Influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the CO2 system in an Arctic fjord in Svalbard |
title_full |
Influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the CO2 system in an Arctic fjord in Svalbard |
title_fullStr |
Influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the CO2 system in an Arctic fjord in Svalbard |
title_full_unstemmed |
Influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the CO2 system in an Arctic fjord in Svalbard |
title_sort |
influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the co2 system in an arctic fjord in svalbard |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
https://doi.org/10.1017/aog.2020.52 https://doaj.org/article/f550016e779f4cfebfbbf3d0b1ca6c3d |
long_lat |
ENVELOPE(17.076,17.076,78.404,78.404) |
geographic |
Arctic Svalbard Tempelfjorden |
geographic_facet |
Arctic Svalbard Tempelfjorden |
genre |
Annals of Glaciology Arctic Climate change glacier Ocean acidification Sea ice Svalbard Tempelfjord* Tempelfjorden Spitsbergen |
genre_facet |
Annals of Glaciology Arctic Climate change glacier Ocean acidification Sea ice Svalbard Tempelfjord* Tempelfjorden Spitsbergen |
op_source |
Annals of Glaciology, Vol 61, Pp 320-340 (2020) |
op_relation |
https://www.cambridge.org/core/product/identifier/S026030552000052X/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2020.52 0260-3055 1727-5644 https://doaj.org/article/f550016e779f4cfebfbbf3d0b1ca6c3d |
op_doi |
https://doi.org/10.1017/aog.2020.52 |
container_title |
Annals of Glaciology |
container_volume |
61 |
container_issue |
83 |
container_start_page |
320 |
op_container_end_page |
340 |
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1766001475125772288 |